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← 7027A
Rolling Candidates to replace 7027A
Beam Tetrode — Octal
⚠ Safety
Top 10 Picks
KT150
adapter
6.3V
✓ Safe
KT120
adapter
6.3V
✓ Safe
EL156
adapter
6.3V
✓ Safe
KT90
adapter
6.3V
✓ Safe
EL51
adapter
6.3V
✓ Safe
6550
adapter
6.3V
✓ Safe
KT88
adapter
6.3V
✓ Safe
12E1
adapter
6.3V
✓ Safe
KT170
adapter
6.3V
✓ Safe
6P3P
adapter
6.3V
⚠ Close, low Pa
Rolling Candidates (134)
i
Heater:
2.1V
0
4V
0
6.3V
9
●
8.4V
0
12.6V
0
13V
0
15V
0
16.5V
0
18.9V
0
19V
0
21V
0
22V
0
25V
0
26.5V
0
30V
0
33V
0
35V
0
45V
0
show all (18)
Fit:
Drop-in
0
Adapter
9
Status:
✓ Safe
9
⚠ Close, low Pa
12
⚠ Low Pa
113
9 shown (target 6.3V only)
▣ Compact
⚙ Thresholds filter
6.3V Heater
(9 candidates)
Tube
Status ↑
Pa
Ah
Fit
KT170
✓ Safe
85
W
1.85
adapter
KT150
✓ Safe
70
W
1.75
adapter
KT120
✓ Safe
60
W
1.8
adapter
EL156
✓ Safe
50
W
1.9
adapter
KT90
✓ Safe
50
W
1.6
adapter
EL51
✓ Safe
45
W
1.9
adapter
6550
✓ Safe
42
W
1.6
adapter
12E1
✓ Safe
35
W
1.6
adapter
KT88
✓ Safe
35
W
1.6
adapter
Generated 2026-04-09
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